Bonding Jumper: Types, Sizing & NEC Rules (MBJ, SBJ, EBJ)
A bonding jumper ties neutral, ground and enclosures together. Size the main bonding jumper from NEC Table 250.102(C)(1): chart, 12.5% rule, worked examples.
NEC Exam Prep Guide 2026: How to Pass the Journeyman & Master Test
You have put in the hours on the job. You know how to pull wire, read a panel, and get an inspection to pass....
Best Electrician Apps for US Electricians (2026)
The best electrician apps for US electricians in 2026, by job: exam prep, NEC calculators, field reference, conduit bending and apprentice hour logs, with prices.
NEC Practice Test 2026: 50 Free Questions for Journeyman Exam
You've got an exam coming up and you need real practice questions — not a study guide to read, not a textbook chapter to...
NEC Table 310.16 Ampacity Chart: How to Read It (60/75/90°C)
NEC Table 310.16 ampacity chart: copper values, 60/75/90°C columns, 110.14(C) termination limits, and when to correct or adjust ampacity.
What Does NEC Stand For? Understanding the National Electrical Code
NEC stands for National Electrical Code.
In the electrical trade, the NEC is one of the most important code books you will use. NFPA describes...
Relocatable Power Taps Explained: Power Strip Rules Electricians Should Know
A relocatable power tap is the code term for what most people call a power strip.
That sounds simple, but it creates a lot of...
Electrical Safety Program Explained: What It Is and Why Workplaces Need One
An electrical safety program is the overall set of policies, procedures, training, and controls a workplace uses to reduce electrical hazards such as shock,...
Kitchen Island Outlet Code (2026 NEC): GFCI & Placement Rules
Kitchen island and peninsula receptacles trip up more electricians than almost any other rough-in detail — not because the rule is complicated, but because...
Grounding a Conductor Explained: What Grounding Means in Electrical Systems
If you are learning electrical theory or preparing for the journeyman exam, the phrase grounding a conductor can be confusing at first.
That is because...
GFCI Testing: How to Check a GFCI Outlet the Right Way
GFCI testing is the process of checking whether a ground-fault circuit interrupter trips and resets the way it should.
That matters because a GFCI is...
NEC 310.16 Ampacity Chart Explained for Electricians
If you hear electricians talk about the “NEC ampacity chart,” they usually mean Table 310.16. That table gives the ampacities of insulated conductors in...
